KB ID 0000419
You have a 2008 R2 Server to sysprep, but your not sure where sysprep is.
Server 2008 – It’s in the same place.
Server 2003 – As with Windows XP, you need to get it from the Windows install CD, its in the supporttoolsdeploy.cab.
Once the files are extracted you can run sysprep (Note: setupmgr.exe is used to create the unattended / answer files for sysprep.)